"In only a few years, 3-D will have a third of the TV market and a sizable chunk of the box office. I have no doubt that this will be one of the 'Next Big Things'," suggests Andy Obermueller.

The editor of Game-Changing Stocks explains, "Here, I review the overall market as well as the four best stock plays in the sector. I see each of these stocks as having serious growth potential as 3-D technology takes off.

"3-D functionality is becoming increasingly available on many high-end TVs. Last year was the first year that 3-D TVs were available; manufacturers sold 3.2 million 3-D sets vs. 247 million HDTVs.

MOST NOTEWORTHY: Dell (DELL), Boyd Gaming (BYD) and OmniVision Tech (OVTI) were today's noteworthy upgrades:

• Dell Inc. (NASDAQ: DELL) was upgraded to Buy from Hold at AG Edwards to reflect the strong April quarter results.
• Boyd Gaming Corp. (NYSE: BYD) was upgraded to Outperform from Market Perform at Wachovia due to ongoing improvement in the locals business through revenue growth and cost reductions, expected benefits at Borgata from the summer season, and a new hotel tower at the property.
• OmniVision Technologies Inc. (NASDAQ: OVTI) was upgraded to Buy from Hold at American Technology and to Buy from Neutral at Merriman to reflect the company's improved revenue and gross margin outlook.

OTHER UPGRADES:

• Universal Compression Partners (NASDAQ: UCLP) was upgraded to Buy from Hold at AG Edwards, as the firm believes the potential for additional asset acquisitions creates likely upside to estimates.
• UBS upgraded shares of Norsk Hydro (NYSE: NHY) to Buy from Neutral and shares of Lear (LEA) to Neutral from Reduce.
• Cowen upgraded VistaCare Inc. (NASDAQ: VSTA) to Outperform from Neutral and added shares to the firm's Focus List. Cowen believes the company's decision to review strategic alternatives will unlock value.
• Matrix USA upgraded shares of Whole Foods Market Inc. (NASDAQ: WFMI) to Sell from Strong Sell based on valuation.
• CHLM upgraded shares of 3D Systems Corp. (NASDAQ: TDSC) to Accumulate from Neutral.
• Cantor upgraded shares of NMS Communications Corp. (NASDAQ: NMSS) to Buy from Hold on potential restructuring benefits.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).